Provider Profile
Mary Katherine Kosowski, A-GNP-C
Unclaimed ProfileAbout Mary Katherine Kosowski
Mary Katherine Kosowski, A-GNP-C is a nurse practitioner based in West Seneca, NY. Mary Katherine is also listed as specializing in nurse practitioner — adult health. Medicare claims data shows Mary Katherine provided 208 services to 152 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1558937441.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (716) 332-2121
- Email not available
Practice Locations
600 HARLEM RD
West Seneca, NY 14224
34 Benwood Ave
Buffalo, NY 14214
Procedures Most Often Billed to Medicare
208 services · 152 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | Treatment | 95251 |
39 | Less often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
150 | More often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
19 | Less often than most peers in Nurse Practitioner |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other nurse practitioners at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 31 related providers in 4 groups
Other nurse practitioners in West Seneca 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2019 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 8
Providers in NY who bill this service to Medicare most often.
Common questions
What kind of doctor is Mary Katherine Kosowski?
Mary Katherine Kosowski is a nurse practitioner in West Seneca, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Mary Katherine Kosowski's address?
Mary Katherine Kosowski is listed at 600 Harlem Rd, West Seneca, NY 14224. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mary Katherine Kosowski?
The number on file is (716) 332-2121. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Mary Katherine Kosowski?
Mary Katherine Kosowski's National Provider Identifier is 1558937441. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Mary Katherine Kosowski train?
Mary Katherine Kosowski attended Other, graduating in 2019. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Mary Katherine Kosowski have?
Mary Katherine Kosowski has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.
CMS public data
What procedures does Mary Katherine Kosowski perform?
According to Medicare billing data, Mary Katherine Kosowski provides treatments such as continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Mary Katherine Kosowski's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Mary Katherine Kosowski. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.